Then, we chose the dispersion number as a characteristic minor parameter, solved the problem and obtained the asymptotic analytical solutions of solute concentration by singular perturbation method, and investigated the influences of various factors on the advancing of concentration front. 作者选择弥散数作为特征小参数,用奇异摄动法求得了溶质浓度在全流场的渐进解析分布,着重考察了各种因素对浓度前沿推进过程的影响。
The modulation action of the local variation of crustal elasticity on tide tilt and strain is investigated by means of minor parameter method. 本文采用小参数扰动法,首先研究了地壳弹性局部变化对潮汐倾斜、应变的调制作用。
Introduce the X-ray fluorescence quantitative analysis of minor heavy elements such as Pb, As etc. in soil and rock using FP ( Fundamental Parameter) method. 是依据FP法进行土壤、岩石中的Pb,As等微量重元素的X射线荧光定量分析的方法。